Improvement in coloring- and drying- paper



1 fitnited gstatrs atrnt oe, Egg

Letters Patent No. 104,006, slated June 7, 1870.

IMPROVEMENT IN' COLORING- AN'D DRYING PAPER.

The Schedule zeferred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, OIREXIUS G. F1TZGEItALI),Of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in the .Process of Coloring Paper; and I do hereby declare that tl1e following is a full, clear, and exact description thereof, reference being bad" to the accompanying drawing, andto the letters of reference marked thereon, which form a part of this specification.

The nature of my invention consists in a new mode or process of coloring paper of every quality, pasteboard, papi er-mach, wall-paper, wlapping, writing, ornamental papers, &c., in every shade and color, by passing it on and under the surface of a coloring so-' lution, drying and rolling it in rolls ready for the market at the rate of from thirty to 'forty feet per minute, with the attention of two persons.

Color is ordinarily given to paper avhile in.the pulp, or colored afterward by laying color on the paper, suspending it for several hours to dry, and then rolling it for market. This'method has a great many objections, some of which are: thelongtimerequired to dry; it is not colored through, but simply receivcs a surface finish; the expense incurred being considerably more than my process; the liability of the running and lapping over the already-colored surfaces, making different shades on the surface where uniformity is desirable; paper-hangings, either cracked by folding, or torn, always exposing the white inner surface, renders the surface-colored paper inferior to a thorough colored mass; and numerous other ob- JECUOHS ot equal in'iportance, while the economy incost and time in my process produces equal or superior beauty, a completely colored mass applicable to every style of tint or fibrous formed paper, atabout half the cost of the usual styles of manipulating the fine colors. v

In order to enable others skilledin the art to which my invention apertains to make and use the same, I will now proceed to describe the manner in which the same is or may be performed.

The paper is placed on a reel, and, by pulling the end, it readily nncoils. The end is passed between two feed-rollers or cylinders, which move so tightly against the paper as to carry it along It is then passed under two coloring-cylinders, which are located with their lower surfaces in the coloring-matterto the depth of one-eighth of an inch. The coloring-matter is contained in a metal box of any size convenient for the dimensions of the paper required to be colored. The paper then rises and passes between two other cylinders, which work with equal velocity as thefeedrollers above mentioned. Then it'passes over and undcr three steam-heated cylinders, and then between two calendar cylinders; thence to a reel, where it 18 rolled up in a complete condition.

The paper is fed by the two first rollers, receives its color while under the next two, and partially dricd by passing betwcenthc third set of rollers, and fully dried by the three steam-heated cylinders, which are of the same size as the third set of rollers, where the paper was partially dried. The paper is pressed smooth by the calemlar-rollers, and wound to rolls on a reel.

The machine may be constructedin any suitable manner. so as to conform to these requirements, and

to let the paper pass through the different stages of preparation, as herein described.

The coloring-matter may be'any suitable. material, but I prefer to use what is known as 'analine colors in solution, and I will here give the manner of preparing some of said colors:

To one gallon of alcohol, at ninety-five percent, dissolve one-half ounce of the analine color, and add the usual mordant used in dyeing cotton goods. This gives the colors generally desirable in paper. The colors may be varied by adding analine in greater proportions, or lessened by diminishing the quantity.

For-file green, the same solution as above, with one-half ounce picrio acid in solution.

Animal color, or cochineal, say about four ounces finely pulverized cochineal, one ounce alum, one gallon alcohol, and four ounces gallic acid.

And in like manner any desired color and shade may be given to paper.

By my process the paper is dried perfectly without overlapping the colors, and obtains a uniform shade, and is rolled up at a speed of about thirty feet per minute.

Having thus fully described my invention,

\Vhatl claim as new, and desire to secure by Letters Patent, is-

1. Drying colored paper by bringing it in contact with one or more heated surfaces, substantially as herein set forth.

2. The method herein described of coloring and drying paper by passing it under rollers or cylinders within the coloring solution, then between other rollers to become partially dried, and, lastly, over and under steam-heated cylinders, to be perfectly dried, substantially as herein set forth.

' In testimony that I claim the foregoing as my own, I afiix my signnture in presence of-two witnesses.

(l. O. FlTZG-ERALD. Witnesses:

O. B. SMITH, A. 1. Saturn. 

